package NGUYENTHECUONG.JAVA_FOR_BASE;

import java.util.Scanner;

public class BT03 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		
		System.out.println("Moi nhap vao so kg :");
		Scanner sc = new Scanner(System.in);
		String a=sc.nextLine();
		if(a.isEmpty()){
			System.out.println("bat buoc phai nhap so kg");
			return;
		}
		double b = Double.parseDouble(a);
		double kq = b*2.2;
		
		System.out.println("so pound:"+kq);
		
	}

	
}
